Company lists · Data refreshed November 2026

Top 25 Utility solar interconnection consultants worldwide

RevenueBase identified 416 company matches for utility solar interconnection consultants worldwide as of November 2026 and tracks 3,802 professional contacts across them, including 1,579 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for utility solar interconnection consultants worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for utility solar interconnection consultants follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
416Companies
3,802Contacts tracked
1,579Verified emails
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The 25 largest utility solar interconnection consultants worldwide

Ranked by team size
Top 25 of 416 company matches for utility solar interconnection consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAnaheim, CA, United StatesHQ recorded Nov 6, 20261,001-5,000897 contacts →

Exact match

“Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchPlano, United StatesHQ recorded Nov 6, 2026201-500241 contacts →

Exact match

“Excellence and value engineering build into every design.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchSouth Brisbane, AustraliaHQ recorded Nov 6, 202651-200186 contacts →

Exact match

“Providing HV Grid Connection, Engineering and Commissioning Services in the Renewable Energy sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBrooklyn, MD, United StatesHQ recorded Nov 6, 2026201-500183 contacts →

Exact match

“Green World Renewable Energy delivers smart, scalable solar engineering and back-office design solutions for residential, commercial, and utility-scale projects across the U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchShanghai, ChinaHQ recorded Nov 6, 2026201-500122 contacts →

Exact match

“Clean Energy Associates (CEA), a solar and storage technical advisory firm, provides quality assurance and independent engineering solutions worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWoods Cross, UT, United StatesHQ recorded Nov 6, 202651-20094 contacts →

Exact match

“1Solar is a full-service solar electric contractor and solar EPC with service areas in Utah, Colorado, Idaho, and Nevada.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5078 contacts →

Exact match

“A multi-utility independent connections provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 202651-20050 contacts →

Exact match

“Headquartered in Atlanta, Georgia, Hannah Solar is a full service solar integrator dedicated to providing the Southeast with the very best in engineering, products, installation…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSantee, CA, United StatesHQ recorded Nov 6, 202611-5042 contacts →

Exact match

“Jamar Power Systems is a full service electrical contractor and solar integrator serving the Southern California area.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchWeston-super-mare, United KingdomHQ recorded Nov 6, 202611-5041 contacts →

Exact match

“Green Frog Connect are one of the leading providers of high-voltage connections to the electricity grid, specialising in building renewable and conventional power-generation…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMaitland, FL, United StatesHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“Castillo Engineering is a leading utility-scale design and engineering firm specializing in full-service solar, energy storage, and high-voltage solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMenands, NY, United StatesHQ recorded Nov 6, 202651-20038 contacts →

Exact match

“We are a full service solar engineering and installation company for both residential and commercial clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBury, United KingdomHQ recorded Nov 6, 202611-5037 contacts →

Exact match

“Crown Energy is the energy and utility division of the Crown Oil Group.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchUnited StatesHQ recorded Nov 6, 202651-20035 contacts →

Exact match

“A multi-disciplinary engineering consulting firm, specializing in utility interconnections, transmission lines, high-voltage electrical substations, and distribution systems for…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchTempe, United StatesHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Clean Tech Control’s provide our clean energy customers with unrivalled industry experience and know-how to deliver smart, reliable, and optimal performance grid connection…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWest Ballina, AustraliaHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Stralis Energy Pty Ltd, established in 2013, is an Australian owned company specialising in Electrical Contracting, Electrical distribution (overhead and underground), Solar and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchHulshout, BelgiumHQ recorded Nov 6, 202651-20024 contacts →

Exact match

“Telcom is een bedrijf dat zich op vlak van de energie- en nutsvoorziening een specialist kan noemen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchPittsburgh, PA, United StatesHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“Pearl Street Technologies, a Part of Enverus, is an interconnection solutions company based in Pittsburgh, Pennsylvania.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBillingshurst, United KingdomHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“We are experts in utility networks with products that support planning and site assessment as well as enabling safe working and procurement of utility work.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBraintree, MA, United StatesHQ recorded Nov 6, 20261-1019 contacts →

Exact match

“Whether your company has a new construction project that is in danger of missing a deadline, wants to lower its monthly utility bills, or needs to understand where the energy is…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchTaos, NM, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Paradise Power Company, Inc (PPC) is New Mexico and Southern Colorado's premier solar electric, EV charging, and energy storage installation professional.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchOntario, CA, United StatesHQ recorded Nov 6, 202651-20017 contacts →

Exact match

“Founded in 2008 Power Grade has become a leading provider of Utility scale infrastructure solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBriarcliff Manor, NY, United StatesHQ recorded Nov 6, 20261-1017 contacts →

Exact match

“Sunrise Solar Solutions is a full service solar integrator.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchOuderkerk Aan Den Ijssel, NetherlandsHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Ervaren technici en technisch adviseurs hebben hun krachten gebundeld in Voltens.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchPlacentia, CA, United StatesHQ recorded Nov 6, 202651-20016 contacts →

Exact match

“We are a full service solar integrator dedicated to providing the very best in engineering, products, installation and service with offices throughout California & Texas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 416 utility solar interconnection consultants worldwide

See the full list, filter by size, metro and specialty, and access 1,579 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Utility solar interconnection consultants worldwide at a glance

As of Nov 6, 2026
41.5%Verified-email coverage
9.1Average contacts per company
1-10Median size (employees)
1.2%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
262
11-50
120
51-200
25
201-500
5
1,001-5,000
2

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for utility solar interconnection consultants are linked below.
What qualifies
Company records worldwide whose business descriptions match “utility solar interconnection consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 1,579 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Utility solar interconnection consultants by location

3 lists · largest first

Every Utility solar interconnection consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “utility solar interconnection consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many utility solar interconnection consultants are there worldwide?

RevenueBase identified 416 company matches for utility solar interconnection consultants worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Willdan tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most utility solar interconnection consultants?

The United States leads with 129 companies, followed by the United Kingdom (46) and Australia (29). Every utility solar interconnection consultants list by country and city is linked on this page.

Which city has the most utility solar interconnection consultants?

London leads with 5 company records, followed by Bangalore (4) and New York (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,579 professional contacts with verified work emails tracked across these 416 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.